Means for removing and disengaging well-packers.



H. B. WALKER. MEANS FOR REMOVING AND DISENGAGING WELL PACKERS.

APPLICATION FILED APR. \4, 1916.

Patnted Feb. 6

0, a. |l 4 FililllclllM PL .HENBY B. WALKER, 0F LANCASTER, OHIO. I

MEANS FOR REMOVING AND DISENGAGING WELL-PACKERS.

Specification of Letters Patent.

- Patented Feb. e, 191 a.

Application filed April 14, 1916. Serial No. 91,162.

To aZZ whom it may concern:

Be it known that I, HENRY B. WALKER, a citizen of the United States, and resident of Lancaster, in the county of Fairfield and State of Ohio, have invented a new and useful Improvement in Means for Removing and Disengaging Well-Packers; and I do hereby declare the following to be a full, clear, and exact description thereof.

My invention relates to a device for use in connection with oil or gas wells. lVhere packers are employed in such wells and it is desired to remove the same, it is often found that due to the rock or sediment which has settled on or around the packer, or the fact that the rubber has lost its resiliency, the packer has become so lodged in the hole that it is impossible to withdraw the same by the ordinary methods now employed.

The object of my invention is to provide for the jarring of the packer in such way as to loosen its hold, or in the event that it cannot be loosened in this way, to provide for the Withdrawal of the tubing, leavingthe packer lodged in the well to be drilled out or destroyed by an explosive.

To these ends, my invention comprises the novel features hereinafter set forth and claimed.

In the drawing, Figure 1 illustrates a portion of a well showing my improved device located therein; Fig. 2 is a longitudinal sectional view of my device, partly broken away; Fig. 3 is a like View taken at right angles to Fig. 2; Figs.4, 5 and 6 are sections respectively, on the lines 44, 55 and 6-45 of Fig. 2; and Fig. 7 is a modified form of the invention.

In the drawing, the numeral 2 designates an ordinary deep well for the production of oil or gas. Located at a point in said well is the packer 3, which may be of any suitable construction. Connected to the packer 3 is the tubular extension 4, which projects up from the upper end of said packer, said extension being provided with the lugs or enlargements 5.

Surrounding the tubular extension 4 of the packer is the sleeve 6, said sleeve having the slots 7 formed therein at opposite sides thereof, with which the lugs or enlargements 5 are adapted to engage. The slots ,7 are provided with the outlets 8 and the open end slot 8 for the passage of the lugs 5 when said sleeve is released from said lugs, .as hereinafter fully set forth.

Outsidethe sleeve 6 is the inclosing tube or cylinder 9, said inclosing tube 9 having its lower end inwardly turned, as at 10, to form a shoulder or flange, which has the opening 11 through which the tubular extension 4 passes. Said flange is provided with slots 10" which are in register with slots 8 of the sleeve 6. A washer 12 of some flexible material surrounds the tubular extension, said washer being interposed between the shoulder 10 and the lower end of the sleeve 6. This washer closes the openings at the lower end ofthe cylinder 8 formed by the slots 10, and prevents the filling of working parts with sediment from the well, rising up through said slots.

The upper end of the outer casing 9 is threaded and engages the collar 13, which connects said casing with the tubing 14 screwed into the upper end of said collar.

The short section of tubing 15 is screwed into the threads on the inner face of the lower end of said-collar 13, and said tubing extends down to the upper end of the tubular extension 4, a gasket of lead or other suitable material 16, being interposed between the end of the tubing 15 and the upper end of the tubular extension 4, to prevent the escape of oil or gas from the tubing.

The outer casing 9, the sleeve 6, and the tubular extension 4' are connected by the screws 17, but when the 'device is lowered into the well, the heads 18. of the screws are sheared off. While the screws 17 are formed of a material sufficiently strong to hold the parts together under ordinary conditions, yet they are adapted to be sheared to disconnect the inner tubular extension -l from the sleeve 6 and outer casing 9, and it will be noted that the inner ends of the screws, which engage the tubular extension 4, are reduced as at 19 so that the shearing may take place at this point and the discon-v nection between the parts effected.

When in use, the packer is lowered into the well on the tubing 14 with the parts connected as indicated in Fig. 2, and the packer is located at the desired point. When itis desired to withdraw the packer, as above stated, the packer sometimes becomes so set and lodges in position as to make it diflicult to release it, and thereupon the tubing is jarred or pulled so as to shear the screws 17 at their inner ends to release the tubular extension 4 of the packer from connection with the tubing or the outer casing 9. l'When this gagement with the lugs of the packer exdisconnection has been made, the tubing can be moved up and down independently of the packer, and by bringing the lower'closed ends 7 of the slots of the sleeve 6 into engagement with the lugs or enlargements 5, the

packer may be jarred and jolted or lifted from position and dislodged. In case, however, it is impossible to dislodge or loosen the packer in this manner, and it is desired to remove the tubing, the tubing is turned at the top of the well and, at the same time, raised so that the lugs 5 will move in the slots 7, and when the outlet 8 is reached, the twisting of the tubing will throw the lugs into the outlet 8, and said lugsare then free to pass down through the open-ended slots 8, thereby permitting the tubing, the sleeve 6, and the outer casing 9 to be withdrawn from the well, leaving the packer lodged therein. The washer12 shears under the lugs or enlargements 5 and in this manner said lugs are adapted to pass beyond said washer to be disengaged from the sleeve 6.-

Fig. 7 shows a modified form of the in vention in which the outer casing 9 is omitted and the sleeve 20 issupported by being thread connected to the tubing coupling 21.

The sleeve 20 has the slots 23, the outlet portion of the slots having closed ends 24: adapted to shear out when brought into. en-

tensions 26. I

In this manner, it it is found impossible to dislodge or loosen the'packer, the tubing and parts connected thereto may be readily withdrawn, leaving only the packer in the well, and may be then removed by drilling or inserting an explosive.

What I claim is;

1. In a device of the character described, the combination of the tubing, a packer, an

7 upwardly-extending tubular portion on said packer coincidingwith said tubing, an enlargement in said tubular extension, a sleeve carried by'said tubing having a slot engaged by the enlargement on said tubular extension. i

2. In a device of the character described, the combination of the tubing, a' packer, an 1lpwardly-extending tubular portion on said packer coinciding with said tubing, an enlargement in said tubular extension, a sleeve carried by said tubing having shoulders engaged by the enlar ement 3. In a device of the character described,

, the combination of the tubing,a packer, an

upwardly-extending tubular extension on said packer coinciding with said tubing, an enlargement on sa1d tubular extension, a

sleeve'carried by said tubing having a slot with closed ends, said slot having an outlet communicating with a second slot in said sleeve open at its lower end whereby upon raising said tubing and at the same time turning the same, disengagement of said enlargement with said sleeve may be elfeeted.

4. In a device of the character described, the combination of the tubing, a packer, an upwardly-extending tubular portion on said packer coinciding with said tubing, an enlargement on said tubular extension, a sleeve having a slot therein engaged by said tubular extension, a sleeve having a slot therein engaged by said enlargement, an outer cas- 5. In a device of the character described,:

the combination of the tubing, packer and upwardly-extending tubular extension on said packer coinciding with said tubing, an?

enlargement on said tubular extension, a

sleeve surrounding'said tubular extension,'

connections between said sleeve and said tubing, said sleeve having a slot formed therein engaged by said enlargement.

, 6. In a device of the character described, the combinationof the tubing, packer and upwardly-extending tubular extension on saidpacker coinciding with said tubing, an enlargement on said tubularextension, a sleeve surrounding said tubular extension, connections between said sleeve and said tubing, said sleeve having shoulders formed therein engaged by said enlargement.

7. In a device of the character described, the combination of the tubing, a'p'acker, an upwardly-extending tubular portion on said packer coinciding with said tubing, an enlargement on said tubular extension, a sleeve surrounding said'tubular extension having an open-ended slot engaged by said enlargenient a casing connected to said tubing and surrounding said tubular extenslon and said sleeve, said casing having an inwardly projecting flange at the lower end thereof and a washer of flexible material interposed between said flange and the lower end of said sleeve and closing the lower end of said slot.

In testimony whereof, I the said HENRY B. IVALKER, have hereunto set my hand. 

